Oil slides towards weekly loss on excess supply worries

LONDON (Reuters) - Oil prices fell for a sixth day on Friday, and were on track for their biggest weekly loss in 10 months, as record-high U.S. crude output added to concerns about a sharp rise in global supplies.

LONDON (Reuters) - Oil prices fell for a sixth day on Friday, and were on track for their biggest weekly loss in 10 months, as record-high U.S. crude output added to concerns about a sharp rise in global supplies.